采用固体废弃物兰炭末制备锂离子电池负极材料

新型炭材料, 2014, (6): 503-507.

采用固体废弃物兰炭末制备锂离子电池负极材料

江行国 ^1, , 程晓华 ^2, , 文华 ^3, , 柳永宁 ^4,

1.西安交通大学金属材料强度国家重点实验室,陕西西安,710049

2.西安交通大学金属材料强度国家重点实验室,陕西西安,710049

3.西安交通大学金属材料强度国家重点实验室,陕西西安,710049

4.西安交通大学金属材料强度国家重点实验室,陕西西安,710049

基金项目: 国家科技支撑计划(2009BAA20B02).@@@@National Science and Technology Support Plan of China (2009BAA20B02)

关键词：锂离子电池负极材料 , 石墨 , 兰炭 , 掺杂 , 热处理

Fabrication of anode materials for a lithium_ion battery with waste semi_coke carbon powder

Keywords： Anode materials of lithium battery , Graphite , Lan carbon , Doping , Heat treatment

以固体废弃物兰炭焦末为原料,通过硼( B)掺杂及高温处理制备出改性兰炭粉末材料。研究B掺杂量对其作为锂离子电池负极材料的影响。结果表明,B掺杂质量分数为8%时,经2300益高温处理,兰炭的电化学性能达到最佳,首次脱锂容量为361 mAh/g,在1 C电流密度下经300次循环后,容量为314 mAh/g,表现出较为优良的循环性能。

Waste semiˉcoke powder generated in semiˉcoke production and transportation was doped with 8 mass% boron by a high temperature treatment at 2 300 ℃. Results indicate that the doping overcomes the shortcomings of low coulombic efficiency, short cycle life, and there are no charge and discharge platforms due to a high content (15 mass%) of impurity in the raw materials. The first discharge capacity is 361 mAh/g at a rate of 0. 1 C and the reversible capacity is 314 mAh/g after 300 cycles at charge and discharge ratesof 1 C, showing excellent cycling performance.

参考文献

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